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quad9-as-a-service - q9aas

What is q9aas (this repo)?

  • Go 的個人小練習
  • 做一個 REST API server 供其他服務方便利用 Quad9 的情資
  • 直接向 9.9.9.9 請求一個惡意網域,會得到 NXDOMAIN 的結果
  • 故此 server 實際上是非同步地向 9.9.9.99.9.9.10 蒐集結果並判斷是否真的是惡意、而非真的不存在

What is Quad9?

Quad9 is a free DNS query data platform.

  • a DNS server: 9.9.9.9
  • 它的特色是會幫你做 security protection,直接在 DNS query 後就幫你 block 惡意網域
  • 更多的疑問可在官方 FAQ 上得到解答

Install, Test, Build and Run

  • test on go 1.14 and latter
git clone https://github.com/hjcian/quad9-as-a-service.git
cd quad9-as-a-service
make install
make test   # run basic unit tests
make build  # build the executable
make run    # execute the executable

API

  • 簡單使用 GET 向 server 請求

Request

curl --request GET \
  --url 'http://localhost:12345/checkBlocklist?hostname=aaa.com'

Response

  • 回傳一個 JSON body,告訴你這個網域是否有被 blocked
HTTP/1.1 200 OK
Content-Type: application/json; charset=utf-8
Date: Tue, 03 Nov 2020 05:24:00 GMT
Content-Length: 17
Connection: close

{
  "blocked": false
}

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Make Quad9 as a restful HTTP service with in-memory caching ability.

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